An electronic atomization device with automatic dry-burning prevention and an automatic dry-burning prevention method

Abstract

The present invention belongs to the field of new cigarette smoking devices, and particularly relates to an electronic atomization device with automatic dry-burning prevention and an automatic dry-burning prevention method. The electronic atomization device includes: an e-liquid storage chamber and an e-liquid amount sensing device; wherein the e-liquid amount sensing device includes at least one sidewall sensing electrode and at least one bottom surface sensing electrode, and all the electrodes can contact the e-liquid, but the electrodes do not contact each other; the sidewall sensing electrode and the bottom surface sensing electrode are designed such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can contact at least one sidewall sensing electrode and at least one bottom surface sensing electrode simultaneously. Only when the e-liquid is actually exhausted in practice, the smoking device of the present invention will determine that the e-liquid is exhausted. During the process of the user sucking the electronic atomization device, the smoking device is basically in an inclined state. In this case, the electronic atomization device and the determination method designed by the present invention will not make misjudgments, improving the user experience.

Description

Technical Field

[0001] The present invention belongs to the field of new cigarette smoking devices, and particularly relates to an electronic atomization device with automatic dry-burning prevention and an automatic dry-burning prevention method. Background Art

[0002] In recent years, with the development of technology and society, people have gradually realized the harm of smoking traditional tobacco to the body, and in some occasions, smoking tobacco has been gradually restricted or prohibited to avoid bringing certain health hazards to the population. However, due to the emergence of e-cigarettes, consumers can meet certain psychological and physiological needs by inhaling atomized smoke, while reducing the dependence on traditional tobacco to achieve the purpose of health.

[0003] Currently on the market, e-cigarette products mainly use the electric heating method to heat and atomize the e-liquid in the atomization chamber with a heating wire to generate smoke, which enters the consumer's mouth to achieve the smoking experience. Since this process basically involves a physical change of the e-liquid from liquid to gas without chemical changes, the components of the smoke are basically harmless to the human body. Therefore, e-cigarettes are a better alternative to quit smoking on the market.

[0004] However, during the atomization process of the e-liquid, once the amount of e-liquid decreases to the point where it cannot be adsorbed by the atomization core or the wicking cotton, or when the e-liquid is exhausted, the e-cigarette will experience a dry-burning phenomenon, which will seriously reduce the smoking taste of consumers. At the same time, because the e-liquid is exhausted and the heating continues, the temperature of the atomization core or the wicking cotton will rise rapidly. After exceeding a certain temperature point, the internal material of the atomization core or the wicking cotton will undergo a chemical reaction, generating harmful gases, which will surely affect the smoking health of consumers. Therefore, dry-burning prevention e-cigarettes have emerged on the market.

[0005] In the process of implementing the present invention, the inventor found that the prior art has at least the following problems:

[0006] 1. Most of the dry-burning prevention e-cigarettes on the market determine whether there is a dry-burning phenomenon by detecting abnormal fluctuations in the resistance value of the heating wire. Since there are many reasons for the abnormal fluctuations in the resistance value of the heating wire, such as changes in the external temperature and changes in the composition of the atomization liquid. Therefore, the misjudgment rate of this detection method is relatively high, and the e-cigarette will perform dry-burning prevention protection multiple times, which will surely reduce the smoking experience of consumers.

[0007] 2. Some anti-dry-burning electronic cigarettes perform anti-dry-burning operations by detecting the depletion of e-liquid in the atomization chamber. One method is to suspend a metal sheet in the atomization chamber. The metal sheet and the bottom surface of the atomization chamber serve as two electrodes respectively. By utilizing the conductive effect when the e-liquid contacts both electrodes simultaneously, the resistance value between the two electrodes is detected to judge the change in the e-liquid level in the atomization chamber. When it is detected that the two electrodes are disconnected, it is considered that the e-liquid is exhausted, and the anti-dry-burning protection is activated. Another method is to design two strip-shaped electrodes on the inner walls on both sides of the atomization chamber. Similarly, the resistance value between the two electrodes is detected to judge the change in the e-liquid level in the atomization chamber. When it is detected that the two electrodes are disconnected, it is considered that the e-liquid is exhausted, and the anti-dry-burning protection is activated. These two detection methods can detect normally when the atomization chamber is placed upright perpendicular to the ground. However, when a user uses an electronic cigarette, the electronic cigarette is usually held in an inclined state by the user's fingers for the user to suck at the mouth end. In the above two detection methods, when the e-liquid volume is small or the electronic cigarette is in an inclined state, it is very likely that the e-liquid cannot contact both electrodes simultaneously, and the two electrodes are disconnected. This is the same as the resistance state when the e-liquid is exhausted, and the resistance value is infinite. Then the electronic cigarette will perform the anti-dry-burning operation, but this is completely a misjudgment, resulting in the user being unable to perform normal sucking operations. Summary of the Invention

[0008] To solve at least one of the above problems, the present invention is proposed.

[0009] A first aspect of the present invention provides an automatic anti-dry-burning electronic atomization device, which includes: an e-liquid storage chamber and an e-liquid amount sensing device;

[0010] Wherein the e-liquid amount sensing device includes at least one sidewall sensing electrode and at least one bottom surface sensing electrode. The sidewall sensing electrode is arranged on the inner sidewall of the e-liquid storage chamber, and the bottom surface sensing electrode is arranged on the inner bottom surface of the e-liquid storage chamber. And all electrodes can contact the e-liquid, but all electrodes do not contact each other;

[0011] The sidewall sensing electrode and the bottom surface sensing electrode are designed such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can contact at least one sidewall sensing electrode and at least one bottom surface sensing electrode located below it simultaneously.

[0012] Preferably, the sidewall sensing electrode is an integral electrode or several electrodes distributed at intervals, and the bottom surface sensing electrode is an integral electrode or several electrodes distributed at intervals.

[0013] Preferably, the bottom surface sensing electrode includes: a planar bottom surface sensing electrode that completely covers the inner bottom surface of the e-liquid storage chamber, or an annular bottom surface sensing electrode arranged at the outermost periphery of the inner bottom surface of the e-liquid storage chamber.

[0014] Preferably, when the e-liquid storage chamber is in the shape of a cuboid, the sidewall induction electrode is a hollow tubular electrode that completely covers the inner sidewall of the e-liquid storage chamber, or a planar electrode arranged in the form of a planar electrode on the four sidewalls of the e-liquid storage chamber;

[0015] When the e-liquid storage chamber is in the shape of a cylinder, the sidewall induction electrode is a hollow tubular electrode that completely covers the inner sidewall of the e-liquid storage chamber, or a planar electrode uniformly distributed in the form of a planar electrode on the four 1 / 4 circumferential sidewalls of the e-liquid storage chamber, and the central angle corresponding to each planar electrode is less than 90°.

[0016] Preferably, when the e-liquid storage chamber is in the shape of a cuboid, the inner bottom surface of the e-liquid storage chamber is divided into 4 triangular regions by its two diagonals, and the bottom surface induction electrode includes planar electrodes distributed on the 4 triangular regions;

[0017] When the e-liquid storage chamber is in the shape of a cylinder, the bottom surface induction electrode includes planar electrodes distributed on N sector bottom surfaces of the inner bottom surface of the e-liquid storage chamber with a maximum central angle of 360° / N.

[0018] Preferably, at least one of the sidewall induction electrodes is an L-shaped strip-shaped induction electrode or an L-shaped rod-shaped induction electrode. The L-shaped strip-shaped induction electrode has a horizontally extending section and a vertically extending section integrally connected. The end of the horizontally extending section contacts the bottom of the inner sidewall of the e-liquid storage chamber, and the vertically extending section does not contact the inner wall of the e-liquid storage chamber.

[0019] Preferably, the horizontally extending section is perpendicular to the inner wall of the e-liquid storage chamber, and the vertically extending section is parallel to the inner wall of the e-liquid storage chamber.

[0020] Preferably, the automatic anti-dry-burning electronic atomization device further includes a detection circuit, and the configuration of the detection circuit enables it to detect the electrical parameters of the e-liquid between each sidewall induction electrode and the bottom surface induction electrode located below it.

[0021] Preferably, the electrical parameters of the e-liquid include but are not limited to: the voltage of the e-liquid, the current of the e-liquid, the capacitance of the e-liquid, the inductance of the e-liquid.

[0022] When each sidewall induction electrode and the bottom surface induction electrode located below it cannot be electrically connected, for example, there is no e-liquid between the electrodes, or the amount of e-liquid is small, or the e-liquid cannot simultaneously contact each sidewall induction electrode and the bottom surface induction electrode located below it, the electrical parameters such as the voltage, current, capacitance, and inductance of the e-liquid between each sidewall induction electrode and the bottom surface induction electrode located below it will change. For example: the resistance of the e-liquid is infinite, and the voltage and current of the e-liquid are zero. Those skilled in the art can obtain the specific changes in capacitance and inductance through actual tests of the specific circuit.

[0023] Preferably, a vape atomization core is further included in the middle of the vape cartridge. An oil inlet hole is provided at the bottom of the vape atomization core and is in fluid communication with the vape cartridge. The distance from the bottom end of each sidewall induction electrode to the bottom surface of the vape cartridge is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the vape cartridge. Purpose: To determine that the state when the vape is exhausted is the state when the vape volume decreases to the point where the vape cannot enter the vape atomization core through the oil inlet hole.

[0024] The second aspect of the present invention provides a method for preventing dry burning of an electronic atomization device, which uses the automatic anti-dry burning electronic atomization device according to any one of the first aspect. The method includes the following judgment steps:

[0025] Detect the electrical parameters of the vape between each sidewall induction electrode and the bottom surface induction electrode located below it. According to the changes in the electrical parameters of at least two pairs of induction electrodes, determine whether the vape is exhausted and determine whether to activate the anti-dry burning protection measure.

[0026] Preferably, when the resistance of the vape between each sidewall induction electrode and the bottom surface induction electrode located below it is infinite, or when the voltage of the vape between each sidewall induction electrode and the bottom surface induction electrode located below it is zero, it is determined that the vape is exhausted and the anti-dry burning protection measure is activated.

[0027] The vape cartridge of the present invention can also have other shapes, and its electrode type and setting method are similar to those of the rectangular and cylindrical vape cartridges of the present invention.

[0028] Each sidewall induction electrode on the inner sidewall of the vape cartridge can be replaced with a series of dot-shaped induction electrodes distributed at intervals, or can be replaced with a series of vertically strip-shaped electrodes distributed at intervals.

[0029] The bottom surface induction electrode on the inner bottom surface of the vape cartridge can be set as several block-shaped, dot-shaped, or strip-shaped electrodes. As long as the bottom surface induction electrode at least covers the outermost periphery of the inner bottom surface of the vape cartridge at intervals.

[0030] The planar induction electrode on the inner sidewall of the vape cartridge can also be replaced with an L-shaped strip-shaped induction electrode or an L-shaped rod-shaped induction electrode, etc., that is, to ensure that a part of the induction electrode is in contact with the inner sidewall of the vape cartridge and the other part is not in contact with the inner sidewall of the vape cartridge.

[0031] The design of the overall induction electrode is such that when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one sidewall induction electrode and at least one bottom surface induction electrode located below it. Even when the e-liquid storage chamber is placed obliquely, for example, when the e-liquid does not contact one inner sidewall of the e-liquid storage chamber, at least one sidewall induction electrode and at least one bottom surface induction electrode located below it will be electrically connected through the e-liquid. At this time, the electronic atomization device of the present invention will not be judged as an e-liquid exhaustion state and will not activate the anti-dry burning protection measure. Therefore, the electronic atomization device of the present invention and the method for preventing the electronic atomization device from dry burning can prevent misjudgment.

[0032] The induction electrodes of the present invention all face the inner sidewall of the e-liquid storage chamber and expose at least a part to contact the e-liquid.

[0033] Preferably, the voltage applied across the induction electrodes is lower than the human safety voltage, so there is no safety hazard for consumers during the suction process.

[0034] Preferably, the detection circuit is designed by combining traditional resistors and capacitors, including but not limited to the series and parallel connection methods of multiple resistors, and at the same time, the parallel connection of capacitors is used to ensure the voltage stability of the circuit.

[0035] Due to the different heights of the e-liquid level and the different placement angles of the smoking device, the contact state between the e-liquid and the induction electrode is different, which in turn leads to a change in the resistance value of the detection circuit. Through the voltage stabilization characteristic of the capacitor, the stability of the sampled data of the voltage is maintained. Finally, through data analysis and processing, the e-liquid volume is calculated, whether the e-liquid is exhausted is judged, and the anti-dry burning protection of the electronic atomization device is carried out according to the result. The anti-dry burning protection operations include but are not limited to operations such as not being able to start up, vibration reminder, sound reminder, and light reminder.

[0036] The specific configuration of the detection circuit is common knowledge or conventional technical means in the field of circuit design. The present invention does not provide a specific circuit diagram.

[0037] The above technical solutions can be freely combined on the premise of not being contradictory.

[0038] The present invention has the following beneficial effects:

[0039] The present invention designs an automatic anti-dry burning electronic atomization device for the first time. The e-liquid volume sensing device of the electronic atomization device includes at least one sidewall induction electrode and at least one bottom surface induction electrode. The design of the sidewall induction electrode and the bottom surface induction electrode is such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one sidewall induction electrode and at least one bottom surface induction electrode.

[0040] The detection method of the electronic atomization device is as follows: when the resistance of the e-liquid between each side wall induction electrode and the bottom surface induction electrode below it is infinite, it is determined that the e-liquid is exhausted, and the dry-burning prevention protection measure is started. In this way, even when the electronic atomization device is in an inclined state, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one side wall induction electrode and the bottom surface induction electrode below it, and the resistance of the e-liquid between at least one side wall induction electrode and the bottom surface induction electrode below it is not infinite. Therefore, the electronic atomization device will not perform the dry-burning prevention operation.

[0041] Only when the e-liquid is actually exhausted in practice, the resistance of the e-liquid between each side wall induction electrode and at least one bottom surface induction electrode is infinite, and the smoking device of the present invention will determine that the e-liquid is in an exhausted state. Compared with the existing smoking devices, the present invention notices for the first time that when the smoking device is inclined, there is a high probability of misjudgment in the existing dry-burning prevention protection, and a solution is proposed. During the process of the user sucking the electronic atomization device, the smoking device is basically in an inclined state. In this case, the electronic atomization device and the determination method designed by the present invention will not have misjudgment, improving the user experience. Description of the Drawings

[0042] Figure 1 It is a three-dimensional view of the e-liquid storage chamber of Embodiment 1 (the upper cover of the e-liquid storage chamber is not shown).

[0043] Figure 2 It is a longitudinal sectional view of the e-liquid storage chamber of Embodiment 2 (the upper cover of the e-liquid storage chamber is not shown).

[0044] Figure 3 It is a three-dimensional view of the e-liquid storage chamber of Embodiment 2 (the upper cover of the e-liquid storage chamber is not shown).

[0045] Figure 4 It is a plan view of the bottom surface of the e-liquid storage chamber 1 of Embodiment 2.

[0046] Figure 5 It is a partial sectional view of the e-liquid storage chamber of Embodiment 3 (the upper cover of the e-liquid storage chamber is not shown).

[0047] Figure 6 It is a partial sectional view of the e-liquid storage chamber of Embodiment 4 (the upper cover of the e-liquid storage chamber is not shown).

[0048] Figure 7 It is a top view of the e-liquid storage chamber of Embodiment 5, which contains e-liquid (the upper cover of the e-liquid storage chamber is not shown).

[0049] Figure 8 It is a longitudinal sectional schematic view of the e-liquid storage chamber of Embodiment 6 (the upper cover of the e-liquid storage chamber is not shown).

[0050] Reference Signs:

[0051] 1. E-liquid storage chamber, 1-1. E-liquid atomization core, 1-2. Oil inlet hole, 4. Sidewall induction electrode, 5. Bottom surface induction electrode, 3. E-liquid. Specific implementation manner

[0052] The content of the present invention will be further described below through specific implementation manners.

[0053] Embodiment 1

[0054] As Figure 1 , an automatic anti-dry-burning electronic atomization device, the electronic atomization device includes: an e-liquid storage chamber 1 and an e-liquid amount sensing device;

[0055] The e-liquid amount sensing device includes: a sidewall induction electrode 4 and a bottom surface induction electrode 5. The sidewall induction electrode 4 is arranged on the inner sidewall of the e-liquid storage chamber 1, and the bottom surface induction electrode 5 is arranged on the inner bottom surface of the e-liquid storage chamber 1. And the two electrodes can contact the e-liquid 3 in the e-liquid storage chamber 1, but the two electrodes do not contact each other. The e-liquid storage chamber 1 is in a cylindrical shape. The sidewall induction electrode 4 is: a hollow tubular electrode that completely covers the inner sidewall of the e-liquid storage chamber 1. The bottom surface induction electrode 5 is: a planar bottom surface induction electrode that completely covers the inner bottom surface of the e-liquid storage chamber 1.

[0056] Therefore, the design of the above-mentioned sidewall induction electrode 4 and bottom surface induction electrode 5 makes: when the e-liquid storage chamber 1 is tilted at any angle less than 90 degrees in any direction, the e-liquid 33 in the e-liquid storage chamber 1 can simultaneously contact the sidewall induction electrode 4 and the bottom surface induction electrode 5.

[0057] The automatic anti-dry-burning electronic atomization device further includes a detection circuit, and the detection circuit is configured to be able to detect the resistance of the e-liquid 3 between the sidewall induction electrode 4 and the bottom surface induction electrode 5.

[0058] When the sidewall induction electrode 4 and the bottom surface induction electrode 5 cannot be electrically connected, for example, there is no e-liquid 3 between the electrodes, or the amount of e-liquid 3 is small, or the e-liquid 3 cannot simultaneously contact each sidewall induction electrode 4 and the bottom surface induction electrode 5 below it, the resistance is infinite.

[0059] The center of the e-liquid storage chamber 1 further includes an e-liquid atomization core 1-1. The bottom of the e-liquid atomization core 1-1 is provided with an oil inlet hole 1-2 that is in fluid communication with the e-liquid storage chamber 1. The distance from the bottom end of the hollow tubular electrode to the bottom surface of the e-liquid storage chamber 1 is higher than the distance from the lower edge of the oil inlet hole 1-2 to the bottom surface of the e-liquid storage chamber 1.

[0060] A method for automatically preventing dry burning of an electronic atomization device, which uses the automatic anti-dry burning electronic atomization device described in Embodiment 1. The method includes the following judgment steps:

[0061] When the resistance of the e-liquid 3 between the side wall induction electrode 4 and the bottom surface induction electrode 5 is detected to be infinite, it is determined that the e-liquid 3 is exhausted, and the anti-dry burning protection measure is started.

[0062] Embodiment 2

[0063] Such as Figures 2 - 4 , the difference between the e-liquid storage chamber 1 and that in Embodiment 1 is:

[0064] The side wall induction electrode 4 is a plurality of electrodes distributed at intervals. Specifically, it is a planar side wall induction electrode 4 uniformly distributed on the four 1 / 4 circumferential side walls of the e-liquid storage chamber 1 in the form of a surface electrode, and the central angle corresponding to each planar electrode is less than 90°.

[0065] The bottom surface induction electrode 5 is a plurality of electrodes distributed at intervals. Specifically, it is 4 planar electrodes distributed on the four 90-degree sector-shaped bottom surfaces of the inner bottom surface of the e-liquid storage chamber 1.

[0066] The automatic anti-dry burning electronic atomization device further includes a detection circuit, and the configuration of the detection circuit enables it to detect the resistance of the e-liquid 3 between each side wall induction electrode 4 and the bottom surface induction electrode 5 located below it.

[0067] A method for automatically preventing dry burning of an electronic atomization device, which uses the automatic anti-dry burning electronic atomization device described in Embodiment 2. The method includes the following judgment steps:

[0068] When the resistance of the e-liquid 3 between each side wall induction electrode 4 and the bottom surface induction electrode 5 located below it is detected to be infinite, it is determined that the e-liquid 3 is exhausted, and the anti-dry burning protection measure is started.

[0069] Embodiment 3

[0070] Such as Figure 5 , the difference between the e-liquid storage chamber 1 and that in Embodiment 2 is:

[0071] There is no e-liquid atomization core 1-1 in the center of the e-liquid storage chamber 1.

[0072] Each planar electrode on the 1 / 4 circumferential side wall is replaced by: 3 dot-shaped electrodes evenly distributed at intervals from top to bottom.

[0073] Replace the bottom induction electrode 5 with: 2 dot-shaped bottom induction electrodes and 1 ring-shaped bottom induction electrode. The 2 dot-shaped bottom induction electrodes are respectively arranged at two ends of the same diameter on the inner bottom surface of the e-liquid storage chamber 1. The 1 ring-shaped bottom induction electrode is a circular ring structure with a small thickness and width, and is embedded on the inner bottom surface of the e-liquid storage chamber 1.

[0074] The automatic anti-dry-burning electronic atomization device further includes a detection circuit, and the detection circuit is configured such that it can detect the resistance of the e-liquid 3 between each side wall induction electrode 4 and the bottom induction electrode 5 located below it.

[0075] A method for automatically preventing an electronic atomization device from dry burning, which uses the automatic anti-dry-burning electronic atomization device described in Embodiment 2, and the method includes the following judgment steps:

[0076] When it is detected that the resistance of the e-liquid 3 between each side wall induction electrode 4 and the bottom induction electrode 5 located below it is infinite, it is determined that the e-liquid 3 is exhausted, and the anti-dry-burning protection measure is started.

[0077] Embodiment 4

[0078] As Figure 6 , the same as Embodiment 3, the difference is only that: the e-liquid storage chamber 1 is designed in a cuboid shape.

[0079] Embodiment 5

[0080] As Figure 7 , different from Embodiment 1 in that:

[0081] There is no e-liquid atomization core 1-1 at the center of the e-liquid storage chamber 1.

[0082] The e-liquid storage chamber 1 is designed in a cuboid shape. The side wall induction electrode 4 is a planar electrode arranged on the four side walls of the e-liquid storage chamber 1 in the form of a surface electrode. The bottom induction electrode 5 is a planar bottom induction electrode that completely covers the inner bottom surface of the e-liquid storage chamber 1.

[0083] Embodiment 6

[0084] As Figure 8 , an automatic anti-dry-burning electronic atomization device, the electronic atomization device includes: an e-liquid storage chamber 1 and an e-liquid amount sensing device;

[0085] The e-liquid amount sensing device includes: four side wall induction electrodes 4 and one bottom induction electrode 5. The side wall induction electrodes 4 are arranged on the inner side walls of the e-liquid storage chamber 1, and the bottom induction electrode 5 is arranged on the inner bottom surface of the e-liquid storage chamber 1. And the 5 electrodes can contact the e-liquid 3 in the e-liquid storage chamber 1, but the 5 electrodes do not contact each other.

[0086] The e-liquid storage chamber 1 is in the shape of a cylinder. The four sidewall induction electrodes 4 are: 4 L-shaped strip induction electrodes evenly distributed on the four 1 / 4 circumferential sidewalls of the e-liquid storage chamber. The L-shaped strip induction electrode has a horizontally disposed section and a vertically disposed section integrally connected thereto. The end of the horizontally disposed section contacts the bottom of the inner sidewall of the e-liquid storage chamber, and the vertically disposed section does not contact the inner wall of the e-liquid storage chamber. The horizontally disposed section is perpendicular to the inner wall of the e-liquid storage chamber, and the vertically disposed section is parallel to the inner wall of the e-liquid storage chamber.

[0087] The bottom surface induction electrode 5 is: a planar bottom surface induction electrode that completely covers the inner bottom surface of the e-liquid storage chamber 1.

[0088] Therefore, the design of the sidewall induction electrode 4 and the bottom surface induction electrode 5 described above enables: when the e-liquid storage chamber 1 is tilted at any angle less than 90 degrees in any direction, the e-liquid 33 in the e-liquid storage chamber 1 can simultaneously contact at least one of the sidewall induction electrodes 4 and the bottom surface induction electrode 5.

[0089] The automatic anti-dry-burning electronic atomization device further includes a detection circuit configured to detect the voltage of the e-liquid 3 between each of the sidewall induction electrodes 4 and the bottom surface induction electrode 5.

[0090] In the center of the e-liquid storage chamber 1, there is also an e-liquid atomization core 1-1. An oil inlet hole 1-2 is provided at the bottom of the e-liquid atomization core 1-1 for fluid communication with the e-liquid storage chamber 1. The distance from the bottom end of the L-shaped strip induction electrode to the bottom surface of the e-liquid storage chamber 1 is higher than the distance from the lower edge of the oil inlet hole 1-2 to the bottom surface of the e-liquid storage chamber 1.

[0091] A method for automatically preventing dry burning of an electronic atomization device, which uses the automatic anti-dry-burning electronic atomization device described in Embodiment 6. The method includes the following judgment steps:

[0092] When it is detected that the voltage of the e-liquid 3 between each of the sidewall induction electrodes 4 and the bottom surface induction electrode 5 is zero, it is determined that the e-liquid 3 is exhausted, and the anti-dry-burning protection measure is activated.

[0093] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. An automatic dry-burning prevention electronic atomization device, characterized in that, The electronic atomization device includes: an e-liquid storage chamber and an e-liquid amount sensing device; Wherein the e-liquid amount sensing device includes at least one side wall sensing electrode and at least one bottom surface sensing electrode. The side wall sensing electrode is arranged on the inner side wall of the e-liquid storage chamber, and the bottom surface sensing electrode is arranged on the inner bottom surface of the e-liquid storage chamber. All the electrodes can contact the e-liquid, but all the electrodes do not contact each other; The side wall sensing electrode and the bottom surface sensing electrode are designed such that: when the e-liquid storage chamber is tilted at any angle less than 90 degrees in any direction, the e-liquid in the e-liquid storage chamber can simultaneously contact at least one side wall sensing electrode and at least one bottom surface sensing electrode located below it; The side wall sensing electrode is an integral electrode or several electrodes distributed at intervals, and the bottom surface sensing electrode is an integral electrode or several electrodes distributed at intervals; The bottom surface sensing electrode includes: a planar bottom surface sensing electrode that completely covers the inner bottom surface of the e-liquid storage chamber, or a ring-shaped bottom surface sensing electrode arranged at the outermost periphery of the inner bottom surface of the e-liquid storage chamber; When the e-liquid storage chamber is in the shape of a cuboid, the side wall sensing electrode is a planar electrode arranged on the four side walls of the e-liquid storage chamber in the form of a surface electrode; When the e-liquid storage chamber is in the shape of a cylinder, the side wall sensing electrode is a hollow tubular electrode that completely covers the inner side wall of the e-liquid storage chamber, or a planar electrode uniformly distributed on the four 1 / 4 circumferential side walls of the e-liquid storage chamber in the form of a surface electrode, and the central angle corresponding to each planar electrode is less than 90°; 2. The automatic dry-burning prevention electronic atomization device according to claim 1, characterized in that, When the e-liquid storage chamber is in the shape of a cuboid, the inner bottom surface of the e-liquid storage chamber is divided into 4 triangular regions by its two diagonals, and the bottom surface sensing electrode includes planar electrodes distributed on the 4 triangular regions; When the e-liquid storage chamber is in the shape of a cylinder, the bottom surface sensing electrode includes planar electrodes distributed on N fan-shaped bottom surfaces on the inner bottom surface of the e-liquid storage chamber with a maximum central angle of 360° / N; 3. The anti-dry-burning electronic atomization device according to claim 1, wherein Wherein at least one of the side wall sensing electrodes is an L-shaped strip-shaped sensing electrode or an L-shaped rod-shaped sensing electrode. The L-shaped strip-shaped sensing electrode has a horizontally extending section and a vertically extending section integrally connected. The end of the horizontally extending section contacts the bottom of the inner side wall of the e-liquid storage chamber, and the vertically extending section does not contact the inner wall of the e-liquid storage chamber; The horizontally extending section is perpendicular to the inner wall of the e-liquid storage chamber, and the vertically extending section is parallel to the inner wall of the e-liquid storage chamber; 4. The automatic dry-burning prevention electronic atomization device according to claim 1 or 3, characterized in that The automatic dry-burning prevention electronic atomization device further includes a detection circuit, and the configuration of the detection circuit enables it to detect the electrical parameters of the e-liquid between each side wall sensing electrode and the bottom surface sensing electrode located below it; 5. The anti-dry-burning electronic atomization device according to claim 4, wherein, The electrical parameters of the e-liquid include: the voltage of the e-liquid, the current of the e-liquid, the capacitance of the e-liquid, or the inductance of the e-liquid; 6. The automatic dry-burning prevention electronic atomization device according to claim 1, characterized in that, An e-liquid atomization core is further included in the middle of the e-liquid storage chamber. An oil inlet hole is provided at the bottom of the e-liquid atomization core and is in fluid communication with the e-liquid storage chamber. The distance from the bottom end of each side wall sensing electrode to the bottom surface of the e-liquid storage chamber is higher than the distance from the lower edge of the oil inlet hole to the bottom surface of the e-liquid storage chamber.

7. A method for preventing dry burning of an electronic atomization device, which uses the automatic dry-burning prevention electronic atomization device described in claim 1 or 3, characterized in that the method includes the following judgment steps: Detect the electrical parameters of the e-liquid between each side wall induction electrode and the bottom surface induction electrode located below it, and judge whether the e-liquid is exhausted according to the changes in the electrical parameters of at least two pairs of induction electrodes, and determine whether to start the dry-burning prevention protection measure.

8. The method for preventing dry burning of an electronic atomization device according to claim 7, wherein, When the resistance of the e-liquid between each side wall induction electrode and the bottom surface induction electrode located below it is infinite, or when the voltage of the e-liquid between each side wall induction electrode and the bottom surface induction electrode located below it is zero, it is determined that the e-liquid is exhausted and the dry-burning prevention protection measure is started.

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